   (checkpointed! [this epoch]
     true)
 
-  (prepare-batch [this event replica]
+  (prepare-batch [this event replica _]
     true)
 
   (write-batch [this {:keys [onyx.core/results]} replica _]

  (checkpointed! [this epoch]
    true)

  (prepare-batch
    [this event replica]
    true)

  (write-batch [this {:keys [onyx.core/results]} replica _]

  (checkpointed! [this epoch]
    true)

  (prepare-batch [this event replica _]
    true)

  (write-batch [this {:keys [onyx.core/results]} replica _]
